From 541acecb6a64c2beacdefbe8a9be08c13090c582 Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Sun, 10 Jan 2016 16:55:06 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=AD=A3?=
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---
 library/think/Url.php | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/library/think/Url.php b/library/think/Url.php
index 3d308a52..8be23126 100644
--- a/library/think/Url.php
+++ b/library/think/Url.php
@@ -46,12 +46,12 @@ class Url
             $url = $aliasUrl;
         } else {
             // 检测路由
-            if (!$match = Cache::get(md5($url))) {
+            if (false === $match = Cache::get(md5($url))) {
                 // 没有检测过 重新检测
                 $match = self::checkRoute($url, $vars);
-                Cache::set(md5($url), $match);
+                Cache::set(md5($url), empty($match) ? '' : $match);
             }
-            if (is_null($match)) {
+            if (!$match) {
                 // 路由不存在 直接解析
                 if (false !== strpos($url, '\\')) {
                     // 解析到类
@@ -177,7 +177,7 @@ class Url
                 }
             }
         }
-        return null;
+        return false;
     }
 
     // 检测变量规则